Get it going yet?

I finally got back to my project... hopefully I'll be running it again soon for tuning.

I wanted to post this warning here.. though the thread is still panning out, I found a problem with the wiring I used on my car, which is very similar to what symtech labs suggests.

Basically, if you pull the MS ECU 2A fuse from the circuit, the P-Type resistors used in the MS ECU no longer are pulled high, creating a short to ground. So, if you have low Z injectors like I do, you get 55 Watts to each one (picture the heat a 60W light bulb makes)... Anyway, pull the fuse, you can toast your injectors, and maybe your coil.

The 'right' answer is to follow the MS3 'external wiring' layout instead, giving 12v to your coil and injectors downstream of your fuel pump relay, which is controlled by the MS ECU.... so they can never be powered unless the ECU is.

I'm not sure why they don't just use N-Type transistors here. I'll try to figure that out, but it is not really relevant because they just don't.

Everything should still work, just be aware your 2A fuse could blow and toast your coil, injectors, and possibly your battery if you don't notice it has a new 20A draw on it.

High Z injectors will be better off, but still not good.